Drywall compound, frequently referred to as joint compound or”sand” from the contracting trade, is a thick white glue used as a sealant for interior surfaces. Though most commonly utilized to spot seams between sheets of drywall, mud may be used on plywood to create a smooth, professional finish. Compound can be layered and spread using different tools to create texture on differently plain walls. Mud also will help insulate plywood walls, sealing against air and water.
Inspect the plywood surface for any raised rough stains, for example splintered locations or knots in the wood. These have to be sanded smooth for the compound to bond seamlessly.
Attach a coarse-grit sandpaper pad into your hand held sander.
Power on the sander and touch the disc into the rough patch of the plywood. Apply firm pressure to the sander’s manage, and move over the area utilizing wide, circular passes. Repeat this step for each damaged region on the plywood surface.
Wipe away all wood shavings and dust from the plywood with a moist towel.
Mix drywall compound based on the directions on the container. Use a joint knife to combine. Some ready-mixed chemicals can be applied right from their container, but most will require thorough mixing.
Scoop out a liberal quantity of compound together with the blade of your joint knife and apply it to the plywood.
Distribute the compound throughout the plywood using your joint knife, so ensuring any tiny holes or seams are packaged smooth.
Repeat Step 6 and Step 7 until the whole plywood surface is covered with a smooth coat of joint compound. If you only wish to pay a small amount of the plywood or patch a hole, then skip this step.
Permit the compound to cure for at least 24 hours or the time indicated on the container.
Sand the sterile compound using your hands held sander and a fine-grit sandpaper pad if desired. After sanding, wipe the plywood clean using a damp towel.